hp-sw-init.patch - this is a priority-group module for the HP storage works device. I have only tested this with scsi_debug, so I know that the start_stop is making its way to scsi and is returning safely.
example table:0 16380 multipath 2 hp-storage-works 0 round-robin 0 2 /dev/sda /dev/sdb hp-storage-works 0 round-robin 0 2 /dev/sdc /dev/sdd
name of group="hp-storage-works" num of groups args=0